Signal Processing - SKF Multilog On-line System IMx-T User Manual

Technical Data
Analogue Measurement
Analogue Measurement
24-bit AD conversion enabling continuous transient capture (no gain or AC/DC
·
switching required)
· Simultaneous sampling of all 16 channels (no multiplexing)
Simultaneous sampling of different channels with different sampling rates
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· Frequency range: from DC to 40 kHz
· Dynamic range: 120 dB
Signal to noise ratio: 90 dB
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· Cross-talk rejection: 100 dB
· Accuracy amplitude: ±2% (up to 20 kHz), ±5% (20 to 40 kHz)
Accuracy phase: ±3° (up to 100 Hz)
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Digital Measurement
· Frequency range: 0,1 Hz to 12,5 kHz
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· Accuracy frequency: 0,05% of measurement value (typically 0,01% up to 2,5 kHz)
Pulse counting
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Signal Processing

· Time waveform
Vector analysis with circular alarms
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· FFT 100 to 6 400 lines
· SKF Acceleration Enveloping
Digital Peak Enveloping (DPE)
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· Integration/Derivation in frequency domain
· Window function: Hanning
Customer formulated mathematical equations
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· Dynamic alarm levels, active range determined on multiple parameters
· Data storage on time, event or alarm condition
Data buffering in flash memory when communication link is down
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· Detection of sensor and cable fault
· Watchdog and self testing
Interface
· Ethernet: 10/100 Mbit RJ45, TCP/IP, switch functionality
RS232 service interface
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Miscellaneous
· Calibration, traceable to BIPM
· CE certified according to EN61000-6-3 and EN61000-6-2
7-40
Required pulse width: > 4 ms for electrical positive,
> 40 ms for electrical negative
SKF Multilog On-line System IMx-T
User Manual, Revision F